no offense but you should have marked them when you pulled it all apart. that kind of thing should be second nature when doing an engine rebuild.
it is vitally important that the cap that came off a specific rod goes back on it and in the correct way. if the cap is incorrectly put onto the wrong rod or put the wrong way around then your bottom end will become tight and wear out prematurely.
there is ways and means of working it out if you have not marked the caps but it is extremely time consuming, and only someone with experience would know how to go about it.